History YMMV / MonsterHigh

* {{Adorkable}}: Iris Clops. She's an avid fan of poetry and romanticism, with one of the cutest smiles on a cyclops girl you ever did see. The clumsiness also adds to the cuteness.

* DieForOurShip: Any new male character who gets any sort of ShipTease with Frankie, or even just has a crush on her, earns the ire of fans who ship her with Jackson/Holt. It doesn't help that the movies introduce these characters while other media like the books and toylines still ship Frankie with him/them.

* UnfortunateCharacterDesign: [[https://images-na.ssl-images-amazon.com/images/I/81DyEpEVqTL._SL1500_.jpg Catty Noir]] was meant to resemble a black cat, but her bright pink lips against black skin has been criticized for looking more like a {{blackface}} caricature.

* SugarWiki/NoProblemWithLicensedGames: New Ghoul In School, the game for the UsefulNotes/Nintendo3DS, UsefulNotes/WiiU, UsefulNotes/{{Xbox}}, and UsefulNotes/PS3, fixes a lot of the problems the older games have, has a unique story, and has way more customization.

* TheProblemWithLicensedGames: While, as mentioned on the main page, there are bits of story not seen elsewhere, the game for UsefulNotes/{{Wii}} and UsefulNotes/NintendoDS is seen as [[ItsEasySoItSucks too easy]], [[ItsShortSoItSucks too short]], the graphics look no better than a UsefulNotes/Nintendo64 game, limited choices to customize your monster character, and the fact that interaction with certain characters from the toyline can be limited at best. Fans were disappointed as a result of this.

** Cleo displays symptoms of [[UsefulNotes/PersonalityDisorders Histrionic Personality Disorder]], in G1 moreso than the other incarnations. She speaks in an [Main/[{{Camp}} exaggerated manner]], seems very concerned about her appearance, acts confident but is insecure, is emotional and extroverted, and can be selfish at times although she’s a good person deep down. Plus, being stuck in a tomb with your BigSisterBully and strict, controlling father (many people with HPD report growing up with helicopter parents) for thousands of years, and after all of that, being constantly taunted by the person who could have saved you but chose not to would probably have some kind of psychological effect on you.

* TheyChangedItNowItSucks: Half the complaints about G2 and G3, even on this page, just boil down to "why isn't it just like G1?"
* WTHCastingAgency: An unusual example, with the "actors" being the characters chosen for certain doll lines. Frequently, completely random characters will be included in themed lines, and often, thematically appropriate characters will be omitted from said lines. Just some examples:

* EvilIsSexy: Toralei, Nefera, Moanica, Kieran, Lilith all have their fans for this exact reason, as do the [[EvilKnockoff Shadow Ghouls]] from ''13 Wishes''.

* AudienceAlienatingEra: The franchise, along with its spinoff Ever After High, hit this in the mid-2010s. In general, toys began switching from fashion dolls to small BlindBagCollectables, which left doll makers in trouble. Monster High and Ever After High ended up switching to a more "budget" style, using cheaper materials, decreasing the moveability of the dolls, and reusing accessories. Monster High also underwent a contentious reboot in 2016 which took a LighterAndSofter approach, making the faces more gentle, the outfits more modest and bright, and the bodies less skinny in an attempt to appeal to a younger audience, as well as shifting the core cast. This just alienated the existing fanbase who signed on for the edgy, creepy style and weren't as concerned with school-appropriate attire or realistic bodies and liked the cast setup as it was. These changes to both toylines ultimately ended up getting both series cancelled. Eventually, Monster High ended up with a reboot in 2022; while contentious with fans for other reasons, it's generally considered to be a return to form compared to the "budget" re-tool.
* AudienceAlienatingPremise:
** The main reason the Lisi Harrison series didn't do as well as hoped. It was too mature for young readers, older readers weren't interested in books based on dolls, and it was too InNameOnly to attract already existing fans of Monster High. Plus, it couldn't evade numerous [[FollowTheLeader comparisons]] to Literature/TheTwilightSaga.

** Within the doll line, visual evolutions have occurred that seem to directly respond to prior waves and intentionally bring in more G1 visual traits and hallmarks to be more loyal to the older brand. The second major wave of dolls including the Monster Ball line and Skulltimate Secrets Series 2 demonstrated that G3 can pull off elegant and mature designs like G1's. In another aspect of this phenomenon, the second signature-release designs of the core characters display this for fans of the G1 style as these takes on the dolls visibly push the characters' designs closer to G1. Second-signature Draculaura is an overall reimagining of G1 signature, down to the outfit, lipstick, and pigtails, and second-signature Clawdeen's base hair color is a true brown like her G1 version, rather than pale lilac.

** This also goes the other way where some fans are more than a little creeped out with the UnfortunateImplications where Clawd even mentions that he knew her since he was only a pup. Added to that that she's 1600 years old, despite both being monsters, it still doesn't make fans any less uncomfortable. If the genders were reversed, it probably would've made the UnfortunateImplications more apparent...

** Within the doll line, visual evolutions have occurred that seem to directly respond to prior waves and intentionally bring in more G1 visual traits and hallmarks to be more loyal to the older brand. The second major wave of dolls including the Monster Ball line and Skulltimate Secrets Series 2 demonstrated that G3 can pull off elegant and mature designs like G1's. In another aspect of this phenomenon, the second signature-release designs of the core characters display this for fans of the G1 style
as these takes on the dolls visibly push the characters' designs closer to G1. Second-signature Draculaura is an overall reimagining of G1 signature, down to the outfit, lipstick, and pigtails, and second-signature Clawdeen's base hair color is a true brown like her G1 version, rather than pale lilac.

* WinBackTheCrowd: Some fans who were still skeptical of [=G3=]'s quality after the movie found themselves won over by the animated series and toy line, which had largely better-received character designs and promised the return of several beloved characters that hadn't appeared in the movie.

* TaintedByThePreview: A number of fans have been put off by the live-action movie before its release, between the discovery that its director also did the movie adaptation of ''Krippendorf's Tribe'' (which was heavily criticized for its use of racist stereotypes) and the various reasons detailed elsewhere in this folder.

* SoBadItsGood: The movies are so goofy and fun that it's hard to hate them despite their numerous and noticeable flaws.